A socioeconomic divide shapes the country’s politics—and its aggressive foreign Policy.

How can an extension change hands with no oversight?

I make short, to-the-point online math tutorials. I struggled with math growing up and have been able to use those ...

A mathematician analyzed 150 years of women’s fashion to understand 20-year trend cycles, and how “optimal distinctiveness” ...

Fashion insiders and beauty magazines have long cited the "20-year-rule"—the idea that clothing trends often resurface every ...